Johnson Controllers Mechanical Temperature Controller A19ZBC-12C Remote Bulb, SPDT, Heat & CoolThe A19ZBC is used for general purpose operating temperature control applications. This mechanical control has a single-pole, double-throw contact unit and a temperature range of 0 to 70°F (-15 to 25°C). Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET10 BULB SIZE INCHES3/8 x 4 DIFFERENTIAL TEMPERATURE °F12 to 40 TEMPERATURE CONTROL RANGE °F0 to 70 VOLTAGE240 / 120 NEMA RATING1 STAGESSingle SWITCH ACTIONSPDT TYPEHeat & Cool LISTING, RATING, CERTIFICATIONUL Listed LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERA19ZBC-12C